Solar in Ballwin, MO
With Ameren Missouri's electricity at about 13.9¢ per kWh and 1,347 kWh of sun per kW, solar is not worth it for a typical Ballwin home today: about a 16.3-year payback.
- Payback, typical home
- 16.3 yrsMissouri: 15.5 yrs
- 25-year net
- $12,700after paying $20,890
- Sun
- 1,347kWh per kW per year
- Electricity
- 13.9¢23% below U.S. average
A typical Ballwin home, by the numbers
| Utility | Ameren Missouri |
|---|---|
| Electricity use | 1,032 kWh a month |
| Best-value system | 7.4 kW, about 17 panels, 9,971 kWh a year (81% of use) |
| Cost | $20,890 |
| First-year savings | $1,367 |
| Payback | 16.3 years |
| Exported power | 4.6¢/kWh (Ameren Missouri) |
Cash purchase, no federal credit, 1.7% yearly rate increases. Run it with your own numbers.
Homes in Ballwin
- Owner-occupied homes
- 84%
- Single-family detached
- 81%
- Median home value
- $377k
- Median year built
- 1976
- Population
- 31,279
- Roofs suitable for solar†
- 97%
Census ACS 2020–2024. †Share of 10,166 buildings Google Project Sunroof rated technically suitable (2019 snapshot).
Installers working in Ballwin
Public installation records for Missouri don't name installers, so we can't rank local companies here. Browse installers in Missouri.
Always verify the license and get at least three quotes. Compare quotes side by side.
Questions about solar in Ballwin
Is solar worth it in Ballwin, MO?
For a typical home in Ballwin, solar is not worth it at 2026 prices: a 7.4 kW system costs about $20,890 after state incentives, saves about $1,367 in year one and pays back in about 16.3 years. Enter your address for an estimate based on your roof and bill.
How much solar power does a system produce in Ballwin?
About 1,347 kWh per year for each kW of panels on a south-facing roof, based on PVWatts and local weather. That's 5% less than the Missouri average. East- or west-facing roofs produce roughly 10–20% less.
Who is the electric utility in Ballwin?
Most homes in Ballwin are served by Ameren Missouri, at about 13.9¢ per kWh on average.
How much do solar panels cost in Ballwin?
A fair cash price is around $2.85 per watt before incentives, so about $20,890 for a 7.4 kW system. There's no federal tax credit for homeowners who buy in 2026.
Nearby
- Chesterfield 16.8 yrs
- Wildwood 16.1 yrs
- Kirkwood 16.7 yrs
- Maryland Heights 16.7 yrs
- University City 16.1 yrs
- St. Peters 15.6 yrs
- St. Charles 15.7 yrs
- Mehlville 15.9 yrs
- All of Missouri
Data: PVWatts (National Laboratory of the Rockies), EIA-861 2025 adjusted to 2026, U.S. Census ACS, LBNL Tracking the Sun, state policy research as of October 2026.